50

60

70

80

90

100

0.001

0.010

0.100

1.000

Iout (A)

Vin = 2.5V

Vin = 3.3V

Vin = 4.2V

Vin = 5.0V

C004

Vout = 1.8 V

TPS62087

2.5V to 6V

V

IN

POWER GOOD

VOS

FB

VIN

GND

EN

SW

PG

C2

22µF

R3

1M

V

OUT

1.8V/3A

L1

0.47µH

C1

10µF

TPS62085

TPS62086

TPS62087

www.ti.com

SLVSB70 – OCTOBER 2013

3-A Step-Down Converter with Hiccup Short Circuit Protection in 2x2 QFN Package

Check for Samples: TPS62085, TPS62086, TPS62087

1

FEATURES

DESCRIPTION

The TPS62085, TPS62086, and TPS62087 device

2

•

DCS-Control™ Topology

family are high frequency synchronous step-down

•

Up to 95% Efficiency

converters optimized for small solution size and high

•

Hiccup Short Circuit Protection

efficiency. With an input voltage range of 2.5 V to

6.0 V, common battery technologies are supported.

•

Power Save Mode for Light Load Efficiency

The devices focus on high efficiency step-down

•

100% Duty Cycle for Lowest Dropout

conversion over a wide output current range. At

•

2.5-V to 6.0-V Input Voltage Range

medium to heavy loads, the converter operates in

PWM mode and automatically enters Power Save

•

17-

μA Operating Quiescent Current

Mode operation at light load to maintain high

•

efficiency over the entire load current range.

•

1.8-V and 3.3-V Fixed Output Voltage

To address the requirements of system power rails,

•

Output Discharge

the internal compensation circuit allows a large

•

Power Good Output

selection of external output capacitor values ranging

from 10-µF to 150-µF capacitance. Together with its

•

Thermal Shutdown Protection

DCS-Control architecture excellent load transient

•

Available in 2-mm x 2-mm QFN Package

performance and output voltage regulation accuracy

are achieved. The devices are available in a 2-mm x

APPLICATIONS

2-mm QFN package.

•

Battery Powered Application

•

Point of Load

•

Processor Supply

•

Hard Disk Drives

Figure 1. Typical Application

Figure 2. Typical Application Efficiency

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

DCS-Control is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.